Furnace



' Septa. 1925.

- 1,553,155 B. c. GOCHENOUR FURNACE Filed June 11, 1924 Patented Sept 8 p i BENJAMIN o. eocirii sroe-iq nne-m snn; 1 LATE; or sromm;

ASHKINGTOQ? BYJAPICE,

FURHAdE exeeutrix ofth'eestate of United States, residing at East-113 Baldwin Avenue-,jSpo-kane; inthe ;,.co-unty of Spokane and State ofWash ing-ton,herebylsubiriit an invention of BENJAMIN C. GOOHENOUR, deceased, who during his'lifetinie invented -1 certain new and, useful Improvements in Furnaces, {of which the following isra {specification; reference being made therei-nkto -the aecompanyingdrawi-ng; I 7 T Y This; invention relates to improvements-1n furnaces pertaining moreparticularlyto; an ore-reduction ,furnajcein: which an oil; blast burneris utilized;- asythe heating element.

One of the objectsjof; the invention is to provide: an: improvement in a furnaceufor reducingcrude:ores.

Anotherobjectof; the inventioniisto pr obefore -ment1oned. The-seepage gpan is vide: a, zfu-mac'econstructed :;in 1 i man e whereby 1 it, carp expand without injury v to -tlOILlSz t0-.pr,o.vide;-a' novel mannerofhe'ating I g the air and oil supply to :th'e' lfurnace -burner.

l A still fu-rtheriobject ofthe-in-ventiom-is.

to provide a novelgformyof seepage .pangfor receivin iand conveying the molten metals;

assume, thezgnadual. slant tQWaIdSi:tl-1e'rrear OfthflQVQIlcfiIIld in reality-constitute:theoven which erie-recoveredimm thewOrfie Aiur lm bjeet w 'e: nv nt construct 1 the furnace; that i there; is. a l continuous. flow; of; slag I from; the furnace, oven.

fumes jgenerated from the ore in the furnace oven: I i Y Other. further objects, improved; points of .constructignangl novel; results .Of the.- inven- Qn-- -eppean; n t fo l ing d c iption nd cc panyingz-dmwing;.

m-t e lr -ing 7 The figuge is I a. View ;of .-.the--f-ur;nacer toagee t .it coopere '12s;;p ,v.=the u nac eproper being ShOWIl2-i1l verticalsection. Throughout the description 1 of -theinvenr qn ke umer ls d ig etes milar; Parts ep se ing he in w se a d, the

ut r ll iQfi e HmaG t ek nneir -mest ex-fee. pi l he we ls eing-e glength and" depth; 015 thekzoven and slants Another and furtherobject of the'iinven- 'tion; is to-.-;pr0v;id6 means for Y collecting; the v .12 29 "the? inner," face .of qwhich is made of mag- 1 nesite; brick-i ;E Xt ending transverse;the oven be ome oughly; yz'z belfore fit is; delivv magnesite; brick-to better withstand; the; .in- 'tense+;heat,-, in {the oven. 'Betweenrthe oven I walls] and-the outeriurnace concrete-walls 6 there isprovi'ded a dry clay filling; 8 which f rms expans o cu h n e ween" t inner; and enter .Walls. heconcrete, walls 16} ef the; furnace are provided, with vertical reinforcing mods 9- while" horizontal reinforcement -.o;f. these.- 1 walls gis-provided Joy:-F the S 'm y pp r drahov he 'basefi of the furnace end; in; the bottom {015 1 the furnace 1 oven 51 1 is 5a seepage pan; 12" madefio fj Sui-table metal. ,'1Phe' =front end 1-3 ofthe-.pan-iis ,ele-

v edewh j h oppes e': r-rear nd of the: 7

pan 1A is; j in I a lowerghorizontal; plane and l6. The" see'page extendsz fthezentire slightly 'towands the-zirear of thefoven. as

adaptedg to; ree'eive'bricks 17 which 1 are loosely ;-lai d in; the pan-andso arranged therein. as: to provide a. series =of-" steps- 18 8 between the front" and? rear; ends of the pan. The upper: layeri -'0-f,t he1br-i,cksa.=in the .pan

are magnesite bIlGkSabBGQUSG O f their -contact Wit-h ;the -in tense' heabi of; the oven; and as readily appeals in:thendrawingsithese-gbricks V v '90 1118103 611; is :closed err-suitable: brick top top 20 are upwardly extending walls-21 j which v-form betweenwthem a bin-22; The

bini22l is adapted to; receive therore :23 prior to l its delivery to theafurnace and the 2 ore is i ofcourse subj ectedyto a 1 large "degree to i the oven heat while in this bin} andthere0re ered into;;the--,-oven:-. The oreecanv-bep-deliv- .ered 1 any convenient way to the; step l9 of the oven bottom'aas-.-for instance through theop'eningfil through -,tl-1e2f0ventop.-, I

1 -suitablyfvsupportedqin gwthe-wovenzzll an'dt105 7 extending; lengthwise 'flthereofiabove the, oven bottom a is; as honii'zontal fEfiile 25' {having anwopeningfifi iimits read"; endi while the: front .7 mi i ofthe flue'ajoins :theWBitiCfll flue: '28..

o-wen; adage-1.,

" open and positioned above the step 19 of the oven bottom, the flue extending upwardly through the top of the oven and the front wall of the-bin 22, its upper end 80 being incommunication with a settling or fume collecting tank or chamber 31. Positioned above the horizontal flue and extending slightly upward towards the rear of the oven is a fine 32. One end of this flue is" in communication with the vertical flue 28 while at 33 midway the length of the fine it joins flue 34 and from this point flue 34 extends vertically upward through the oven top and the rear wall of the bin 22. The upper end 35 of this flue communicates with the fume collecting chamber '31. Adjacent the connection of the two vertical flues with the fume collecting chamber these flues are provided with adjustable dampers 36.

The fume collecting tank or chamber may be of any desired shape or size to meet the existing conditions. The chamber ha. closed ends and is provided with interioi screens or baffle plates 87. One end wall of the chamber is provided adjacent thvv chamber bottom with a door 38 through which the collected or settled substance taken from the ore fumes can be removed from the chamber. The settling chamber31 is further provided with an outlet pipe 39 which is in communication with a stack 40. The stack 40 above its communication with. the pipe 39 can be provided with a water spray 41. The purpose of this spray will be hereinafter described and its use is optional.

The rear wall of the furnace is provided with an opening 12 the inner end of which is on a line with the rear end of the bricks in the seepage pan 12. This opening is for the purpose of allowing the slag which moves along the oven bottom and over the steps therein to escape from the oven. The opening is provided with a chute 453 at its end. This opening and chute are positioned low enough that when the ore slag starts flowing over the oven bottom a continuous flow of slag is moving at all times through the opening and over the oven floor.

The rear furnace wall is further provided with openings 44 and 45 which are normally closed. These openings give access to the oven for the purpose of repairing or cleaning the oven and flues.

The oven 11 is heated by an oil blast burner which extends through the front furnace and oven walls to a point just above the oven floor step 19. The oil for the burner 45 is supplied from the tank 46 by means of a pipe 47 which extends through the second horizontal reinforcing pipe. 10 and down the back ofthe furnace as at 48 into the fourth hollow reinforcing pipe 10 and out to the front of the furnace at e9 where there is provided a valve control 50. Because of the oil pipe line being carried through these hollow pipes the oil is delivered to the burner 90 preheated, once the furnace is in operation.

The air and pipe lines meet at 57 and deliver an air and oil mixture to the burner 90 through a common plpe 58.

Operation.

From the foregoing it will-be seen that in the operation of the furnace the dried and somewhat heated ore in the bin 22 is allowed to deposit upon the step 19 of the oven bottom. The burner 90 is then started, the

force of the air supplied to the burner bea ing sufficient to blend the oil and air into a fine spray which comes in contact with the heated oven. It will-0f course be readily understood that the oven is heated in some suitable or long practiced manner prior to the starting of the oil spray burner 15.

The heat immediately begins to work upon the ore causing it to disintegrate and startto flow or move down the steps 18 of the oven bottom. In a short time a continuous flow of slag is moving over the length of the bottom and out of the slag opening 42 and over the slag chute 43. The different metals contained by the ore will of course become molten and will seep down between the loosely placed bricks 17 in the seepage pan.

This molten metal will eventually reach the seepage pan and flow down its length and be collected in the well 16 at the end of the pan.

In the meantime the fumes from the ore have been thrown off and these find escape through the horizontal flues 25 and 32 and the vertical flues 28 and 34. These fumes will pass up the escape flues which are of a size to take care of them without need of additional force other than the explosion of the heated oil sprayed into the oven.

Upon reaching the settling tank or fume collector 31 the fumes come in contact with the screens or baflies 37 where thehe-avier fumes or dust are collected allowing the remaining fumes to passfrom the tank through the pipe 39 into the stack 40. This stack 40 is not built high enough to create any appreciable amount of draft but is used only to allow the escapement of the residue of fumes from the settling tank.

As before mentioned a water spray if can be used in this stack if desired so as to ill) any common suitable construction at the bottom of the stack.

Attention is directed to the fact that the settling tank or fume collector islarge enough and long enough to allow the fumes to'ripen and settle and that both the inlet and outlet pipes of the collector are controlled by dampers to control the draft through the collector.

The metals which find their way to the well 16 will of course depend upon the character of the ore operated upon. The deposit in the fume collector will also be controlled by the character of the ore operated upon. The deposit in thefume collecting chamber can be removed through the door 38 and if desired this deposit can be separated into its several different ele ments. without separation the deposit in the fume collector can be mixed with linseed oil with the result that a very good mixed paint will be had.

It will be readily seen that the fumes which rise from the ore in the oven can enter the horizontal flue 28 at the rear end I of the oven, but it will also be seen, in the event these fumes are not ripe orlight, that when they reach the vertical flue 28, the heavier or unripened fumes willbe drawn downward through the open lower end 29 of the vertical flue, and again enter the oven where they will be reheatedand ripened so that they can escape to the fume collector.

Having thus described my invention, what I claim and desire to secure by Letters Patcut is:

1. In an ore reduction furnace or the like, an oven, a heater for the oven, a seepage pan beneath the oven bottom, and communication between the oven bottom and the seepage pan, for the purpose described.

2. In an ore reduction furnace or the like, anoven, a heater for the oven, horizontal and vertical flues in communication with the oven, a fume collector in communication with the fines, and a seepage pan beneath the oven bottom, for the purpose described.

3. In an ore reduction furnace or the like,

an oven, adapted to receive ore or the like, a

munication with the rear end of the ovenand its opp slte end in communication with It has been found however thatthe vertical flueadjacent the lower end thereof, whereby the heavy fumes entering the horizontal flue from the rear end of the oven are drawn back into the oven through the lower end of the verticalflue to be reheated and ripened.

4. In an ore reduction furnace or the like, an oven, a burner-for'the oven, an inclined oven bottom provided with steps, and an opening in the rear of the-oven whereby the material in the oven progresses the length of the oven bottom in the manner described.

5. In an ore reduction furnace or the like, an oven, a burner for the even, a horizontal flue above the oven, a vertical'flue in communication with the front end of the oven, one end of the horizontal flue in communication with the rear end of the oven and its other end in communication with the vertical flue adjacent its lower end, the-vertical flue in communication with a fume collector, a chimney, communication between the chimney and the fume collector, and adjustable drafts between the chimney and the fume collector, and the fume collector and the oven, for the purpose described.

6. In an ore reduction furnace or the like,

well.

7. An ore reduction furnace or the like, an H oven, an oven bottom composed of loosely laid bricks supported by a seepage pan extending throughout the length and breadth of. the oven and having its rear end extending through the rear end of the oven wall, the outer end of the seepage pan terminating in a well, the front end of the oven bottom adapted to receive ore Or the like, the oven bottom inclined towards the rear of the oven the rear oven wall opening.

In testimony whereof I hereunto affix my signature.

ALICE GOCHENOUR,

Ewecutm'w of thle'Estate of Benjamin 0.

Goohenom", Deceased. 

